“…It is also often used for the prevention and treatment of thromboembolic disorders such as deep vein thrombosis, pulmonary embolism, peripheral artery disease (Bauersachs et al, 2020; Bonaca et al, 2020; Cohen et al, 2020; Schastlivtsev et al, 2019; Simmons et al, 2018; Wang et al, 2021). Therapeutic drug monitoring is critical to decrease the incidence rate of bleeding and thrombosis for personalized treatment with rivaroxaban, especially for drug interaction treatment, patients with renal dysfunction, elderly patients, patients with cardiovascular problems, and so on (Atarashi et al, 2021; Willmann et al, 2021; Xie et al, 2021; Zhang et al, 2021). In addition, an accurate analytical method is necessary for therapeutic drug monitoring.…”